Wethermill stepped carefully again on to the grass, and with the toe of his shoe scraped up and ploughed the impressions which he and Adele Rossignol had made on the ground, leaving those which Celia had made.

He came back to the window.
"She has left her footmarks clear enough," he whispered.

"There will be no doubt in the morning that she went of her own free will." Then he took the chauffeur's seat, and the car glided silently down the drive and out by the gate.

As soon as it was on the road it stopped.

In an instant Adele Rossignol's head was out of the window.
"What is it ?" she exclaimed in fear.
Wethermill pointed to the roof.